This indicates an attack attempt to exploit a Memory Corruption vulnerability in Apple QuickTime.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted .qtif file with a malformed "idsc" atom. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted .qtif file.
Apple QuickTime 7.1.5 and earlier versions
System Compromise: Remote attackers can gain control of vulnerable systems.
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